213726680 has 16 divisors (see below), whose sum is σ = 480885120. Its totient is φ = 85490656.

The previous prime is 213726661. The next prime is 213726683. The reversal of 213726680 is 86627312.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 213726680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213726683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2671544 + ... + 2671623.

It is an arithmetic number, because the mean of its divisors is an integer number (30055320).

Almost surely, 2^213726680 is an apocalyptic number.

213726680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213726680 is an abundant number, since it is smaller than the sum of its proper divisors (267158440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213726680 is a wasteful number, since it uses less digits than its factorization.

213726680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5343178 (or 5343174 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 213726680 is about 14619.3939682875. The cubic root of 213726680 is about 597.8876460694.

The spelling of 213726680 in words is "two hundred thirteen million, seven hundred twenty-six thousand, six hundred eighty".